Use Bamboo variables in password fields inside tasks

I have few tasks in bamboo like SCP, SSh and others where we have to input password inside the password field.

It seems except for password fields we can use bamboo variables to pass values to any field in bamboo tasks.

Is there a way we can do so for password fields to avoid the manual effort of entering same password in each of those password fields and updating them every time it expires with the new password value.